Electric Power Steering Systems Compact, Safe and Fully Integrated “The Ultimate in Steer by Wire for Warehouse Trucks” The New Generation EPS Motion Solutions that Change the Game www.alliedmotion.com Optional Turning Wheel Absolute Position Control
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Electric Power Steering Systems
Compact, Safe and Fully Integrated“The Ultimate in Steer by Wire for Warehouse Trucks”
The New Generation EPS
M ot ion So lu t ions t ha t C hange t he G ame w w w.a l l i edmot i on .c om
Optional Turning Wheel Absolute Position Control
Vast Experience Allied Motion has supplied the fork lift truck industry with compact, safe and reliable all electric steer by wire and power assist servo systems for decades. The new EPS series leverage from this experience of over 200 000 units from previous generations in the field. Covers all sizes of warehouse trucksThe Allied Motion EPS series of steering systems offer compact, versatile, long-life, trouble-free steering for all common warehouse truck sizes, from the smallest pallet lifter to multi-ton reach trucks or 3 wheel counter balance trucks.
New Feature Turning Wheel Absolute Position Control - Patent Pending A common headache for manufacturers of fork lift truck using steer-by-wire is the homing sequence. When the truck key is turned, most trucks utilize a homing sequence where the turning wheel rotates until a homing sensor is activated, and the absolute position of the turning wheel is known. With the optional Allied Motion Turning Wheel Absolute Position Control none of this is needed. This option (patent pend-ing) allows the controller to know the absolute position of the turning wheel, without the need of external sensors. When the driver turns the key, the drive wheel makes a very small movement, hardly noticeable to the operator and then the truck steering direction is known by the EPS. This position information can be communicated to external systems via CAN. Even if the truck wheel has been manually moved during power off (for example in service with the wheel lifted) the EPS will still figure out the absolute position once power is turned on again. No external parts means higher reliability, easier assem-bly, maintenance and lower cost!
• EN13849 approved• 24, 36 or 48 VDC battery operation, 72-80V optional• A big range covers all types of lift trucks• Totally integrated motor/gearbox/controller and optional
custom output gear• High efficiency PMAC motor technology, sine current
output gear• Optional Turning Wheel Absolute Position Control• Designed for use in cold stores to -35 oC• Optional tiller arm brake current control• CAN communication for control and diagnostics• Algorithms for vehicle speed dependant steering action• The Allied Motion SWS Steering Wheel Sensor completes
the system, see separate leaflet. The EPS series is also compatible with several other sensor technologies
Preliminary, may be changed without notice.
M ot ion So lu t ions t ha t C hange t he G ame w w w.a l l i edmot i on .c om
M ot ion So lu t ions t ha t C hange t he G ame w w w.a l l i edmot i on .c om
SWS Steering Wheel Sensor The Allied Motion SWS is specifically developed for use in reach trucks and other vehicles using steer-by-wire power steering. The steering wheel can be mounted directly to the SWS.
• Flat, only 29 mm in height!• For direct mount of typical EPS Steering Wheels• Suitable “friction feeling” for typical
Reach Truck Steering Wheels• PWM or CAN versions for direct connection to
the EPS or to the truck network
Also see
29 mm!
Download the SWS Datasheet on www.alliedmotion.com